Mineral And Metamorphic Rock

Schist (Kyanite Schist)

Kyanite-Mica Schist (primarily Al2SiO5, KAl2(AlSi3O10)(OH)2, and SiO2)

Greenshist / Chlorite Schist

Chlorite schist (contains (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)

Serpentine

Antigorite/Lizardite (Mg, Fe)3Si2O5(OH)4

Shale (possibly Carbonaceous or Oil Shale)

Argillaceous Sedimentary Rock

Schist

Mica Schist (Foliated Metamorphic Rock)

Milky Quartz

Silicon Dioxide (SiO2)

Greenstone (or Greywacke/Metasediment Pebble)

Metamorphosed Mafic Rock / Chlorite Schist

Ruby in Zoisite

Anyolite

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Veined Rock (Likely Graywacke or Quartzite)

Silicon Dioxide (SiO2) veins in Metasedimentary matrix

Greenstone (Epidote/Chlorite Rich Rock)

Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Garnet Schist

Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)

Quartz Pebble (with Feldspar/Mica)

Granitic Quartz / SiO2 with KAlSi3O8

Gneiss

High-grade Metamorphic Gneiss

Quartz vein in metamorphic rock

Crystalline Silicon Dioxide (SiO2) in Host Rock

Banded Gneiss with Quartz Vein

Foliated Metamorphic Rock (Gneiss)

Pyrite in Matrix (Fool's Gold)

Iron Disulfide (FeS2)

Green Slate Pebble (Serpentine / Greenschist Pebble)

Greenschist / Low-grade Metamorphic Rock

Gneiss

Gneiss

Banded gneiss pebble

Gneiss, typically quartz–feldspar–mica assemblage

Slickenside

Tectonic Fault Scarp Surface

Schist with Quartz Veins

Schist with Quartz (SiO2)

Quartz with Mica/Schist inclusion

Silicon Dioxide (SiO2) with Phyllosilicates

White Quartz

Silicon Dioxide (SiO2)

Yellow Quartz

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade metamorphic rock)

Quartzite with Schist layers

Metamorphosed Quartz-rich Rock (Mixed Schist/Quartzite)

Gneiss (High-Grade Metamorphic Rock)

Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

Gneiss (High-grade Metamorphic Rock)

Gneiss (Metamorphic silicate rock)

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2

Likely quartz-rich metamorphic rock (quartzite or milky quartz)

Quartzite; predominantly quartz (SiO₂), possibly with feldspar and iron-oxide staining

Quartz with Schist Matrix

Crystalline Silicon Dioxide (SiO2) in micaceous schist

Quartz-rich metamorphic rock, possibly quartzite

Quartzite; primarily crystalline silicon dioxide (SiO₂), with minor feldspar, mica, or iron oxides

Felsic Drill Core (likely Gneiss or Granite)

Felsic Metamorphic Rock (Gneissic profile)

Garnet-bearing Quartzite

Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)

Lapis Lazuli

Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)

Glaucophane Schist (Blueschist)

Blueschist facies metamorphic rock

Mixed mineral and rock collection

Predominantly quartz varieties, including amethyst, plus likely calcite, feldspar, mica, and miscellaneous polished stones

Pebble

Clast (specifically a granule or small pebble)